Results 21 to 30 of about 3,262,546 (268)

Stochastic resonance in electrical circuits—I: Conventional stochastic resonance. [PDF]

open access: yes, 1999
Stochastic resonance (SR), a phenomenon in which a periodic signal in a nonlinear system can be amplified by added noise, is introduced and discussed. Techniques for investigating SR using electronic circuits are described in practical terms.
Luchinsky, D. G.   +3 more
core   +1 more source

Pemberian EM4 (Effective Microorganisme 4) Hasil Kultur dalam Media yang Berbeda pada Pakan untuk Budi daya Lele (Clarias sp.)

open access: yesJurnal Riset Biologi dan Aplikasinya, 2019
Ikan lele (Clarias sp.) merupakan salah satu komoditas perikanan air tawar yang banyak diminati di Indonesia dan terjadi peningkatan produksinya setiap tahun. Untuk itu, terus dipacu peningkatan produksi ikan lele. Upaya yang dilakukan untuk meningkatkan
Mohhamad Yunus Anis, Dyah Hariani
doaj   +1 more source

Encapsulation of Cs/Sr contaminated clinoptilolite in geopolymers produced from metakaolin [PDF]

open access: yes, 2015
The encapsulation of caesium (Cs) and strontium (Sr) contaminated clinoptilolite in Na and K based metakaolin geopolymers is reported. When Cs or Sr loaded clinoptilolite is mixed with a metakaolin geopolymer paste, the high pH of the activating solution
Bensted, J   +6 more
core   +1 more source

Interannual, seasonal, and diel variation in soil respiration relative to ecosystem respiration at a wetland to upland slope at Harvard Forest [PDF]

open access: yes, 2010
Soil carbon dioxide efflux (soil respiration, SR) was measured with eight autochambers at two locations along a wetland to upland slope at Harvard Forest over a 4 year period, 2003–2007.
Bubier, Jill L.   +6 more
core   +2 more sources

Multi-Criteria Decision Making Using Preferential Selection Index in Titanium based Die-Sinking PMEDM [PDF]

open access: yes한국정밀공학회지, 2019
Powder mixed electrical discharge machining (PMEDM) is a new machining technology. The optimization of process parameters in PMEDM is being researched. The determination of the value of the weights of quality indicators in a multi-objective optimization ...
Nguyen Huu-Phan   +4 more
doaj   +1 more source

Evidence of hydrological control of Sr behavior in stream water (Strengbach catchment, Vosges mountains, France) [PDF]

open access: yes, 2002
Strontium and particularly 87Sr/86Sr ratios in stream water have often been used to calculate weathering rates in catchments. Nevertheless, in the literature, discharge variation effects on the geochemical behavior of Sr are often omitted or considered ...
Amiotte-Suchet   +48 more
core   +2 more sources

Study on the Factors Influencing the Separation of Sr and Nd in Sediments by Ion Exchange Resin

open access: yesYankuang ceshi, 2018
BACKGROUND In geological studies, Sr and Nd isotopes are classical isotopic dating and tracer systems. OBJECTIVES The traditional separation method usually uses the AG50W-X8 resin to elute and separate Sr and REEs in sediments, and then uses Sr-special ...
YIN Peng   +3 more
doaj   +1 more source

Multi-objective parametric optimization on the EDM machining of hybrid SiCp/Grp/aluminum nanocomposites using Non-dominating Sorting Genetic Algorithm (NSGA-II): Fabrication and microstructural characterizations

open access: yesReviews on Advanced Materials Science, 2022
In this study, different input parameters for electric discharge machining (EDM) are examined in order to revise the distinctiveness of EDM for machining aluminum-based hybrid metal matrix composites (MMCs).
Garg Harish K.   +6 more
doaj   +1 more source

Photoionisation loading of large Sr+ ion clouds with ultrafast pulses [PDF]

open access: yes, 2008
This paper reports on photoionisation loading based on ultrafast pulses of singly-ionised strontium ions in a linear Paul trap. We take advantage of an autoionising resonance of Sr neutral atoms to form Sr+ by two-photon absorption of femtosecond pulses ...
A. Mortensen   +37 more
core   +3 more sources

Current scenario and challenges of septage treatment - A societal perspective [PDF]

open access: yesE3S Web of Conferences, 2023
This paper analyzes the problem of septage management related to opportunities and solution. in accordance with present treatment technologies. The scenario in India is about 41 % of septage sludge is disposed in local area without treatment Still some ...
Shyamala G.   +2 more
doaj   +1 more source

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